Disclosed are a melt-blown composite nanometer antibacterial super-soft nonwoven material and a preparation method. The melt-blown composite nanometer antibacterial super-soft nonwoven material comprises a first flexible melt-blown layer (1), a first nanofiber antibacterial layer (2), a nanofiber hydrophilic layer (3), a second nanofiber antibacterial layer (4) and a second flexible melt-blown layer (5), which are arranged successively from top to bottom, and both the first nanofiber antibacterial layer (2) and the second nanofiber antibacterial layer (4) are formed by alternately laminating a nanometer titanium dioxide material layer (6) and a nanofiber antibacterial material layer (7). The first flexible melt-blown layer (1) and the second flexible melt-blown layer (5) provide the melt-blown composite nanometer antibacterial super-soft nonwoven material with a better softness, a good hand feeling and a high comfort degree. A sustained antibacterial body is formed by alternately laminating the nanofiber antibacterial material layer (7) and the nanometer titanium dioxide material layer (6), making the nonwoven material have a lasting antibacterial effect. The nanometer titanium dioxide layer (6) also has a good anti-ultraviolet function. The nanofiber hydrophilic layer (3) makes the nonwoven material have a good hydrophilicity.